Difference between revisions of "CCNA Explorer 2 Introduction to Dynamic Routing Protocols"
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Revision as of 16:34, 25 October 2010
Contents
Introduction and Advantages
Perspective and Background
Network discovery and routing table maintenance
The purpose of a routing protocol includes:
- Discovery of remote networks
- Maintaining up-to-date routing information
- Choosing the best path to destination networks
- Ability to find a new best path if the current path is no longer available
Advantages
Overview
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Classifying Dynamic Routing Protocols
IGP and EGP
Distance Vector and Link State
Distance Vector bruger for det meste Bellman-Ford algoritmen.
Distance vector protocols work best in situations where:
- The network is simple and flat and does not require a special hierarchical design.
- The administrators do not have enough knowledge to configure and troubleshoot link-state protocols.
- Specific types of networks, such as hub-and-spoke networks, are being implemented.
- Worst-case convergence times in a network are not a concern.
Link-state protocols work best in situations where:
- The network design is hierarchical, usually occurring in large networks.
- The administrators have a good knowledge of the implemented link-state routing protocol.
- Fast convergence of the network is crucial.